How Does Cordwood Construction Compare to Strawbale Building?

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Similarities and Differences in Building Techniques Both cordwood and strawbale construction rely on natural, locally sourced materials. However, cordwood construction requires a higher level of skill and labor, as each log must be carefully cut and fitted together. In contrast, strawbale building can be more accessible to DIY builders, as bales are often pre-cut and easy to handle. A typical cordwood wall consists of 2-3 courses of logs, with a total thickness of 12-18 inches (30-45 cm), while a strawbale wall may be 18-24 inches (45-60 cm) thick.
Insulation and Climate Considerations Cordwood construction offers superior insulation due to the air pockets between the logs, which can achieve R-values of 20-40 per inch (25-50 per cm). In colder climates, this can be a significant advantage. Strawbale building, on the other hand, can achieve R-values of 10-20 per inch (13-25 per cm), making it more suitable for climates with milder winters. A well-designed cordwood building can be just as effective in warm climates, with proper ventilation and shading.
Building Codes and Regulations Both cordwood and strawbale construction are often subject to local building codes and regulations. However, cordwood construction may be more likely to be accepted by local authorities due to its resemblance to traditional log construction methods. Strawbale building, on the other hand, may require additional documentation and permits to demonstrate its structural integrity. A typical cordwood cabin may require a 2-4 inch (5-10 cm) mortar joint between logs, while a strawbale building may use a combination of natural binding agents and wire mesh to hold the bales in place.